Non electric, efficient and compact enough to fit under the kitchen sink. Guaranteed softened water for your home and family.
The S4 is the latest generation softener from TwinTec. It's been designed and engineered in the UK to work with all types of British plumbing systems and all sizes of family, just to make life simple. Conforms to British Standard BS14743. Patented (view patent certificate)
Our water softeners pack a little more punch than all the rest. We invented a water softener with two cylinders, unlike the industry standard of just one. So whilst one is regenerating the other is still working to soften your water. This means the TwinTec S4 provides you with an uninterrupted supply of softened water, no matter how much water your family guzzles.Find out more
At just 49cm high, the S4 will easily fit under the kitchen sink - in fact, it was specifically designed with this in mind. The softening tanks have been designed to maximise the available space, whilst being small enough to fit into tight spaces.
Is there anything worse than pouring heavy bags of salt, trying not to make a mess? That’s why the S4 uses light blocks of salt for easy loading. Our specially manufactured block salt last longer too as the S3 water softener only regenerates when it needs to, rather than on a daily timer like other systems.
We also love the clear lid so you can see when to top up… The beauty is in the details.
The S4 is so efficient it has been designed to work solely off the power of your water supply. There are no timers, computers or manual adjustments to be concerned with. What's more, there is no electrical feed so power cuts are of no concern. Sustainable energy, without the need for a power outlet. Genius!
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"We have been using the TwinTec S4 with total satisfaction for over 5 years now. It is simplicity itself. The machine is small and unobtrustive, absolutely maintenance free and silent in use. I have owned a number of softeners, but never one as efficient as the S4"